use join with php explode code example
Example: implode and explode in php
<html>
<body bgcolor="pink">
<h3>Implode Function</h3>
<?php
$arr=array ('I','am','simple','boy!');
echo implode(" ",$arr);
$str="I am simple boy!";
print_r(explode(" ",$str));
?>
</body>
</html>